JP3704845B2 - Karaoke equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a karaoke apparatus for performing karaoke performance by sequentially supplying performance data from a sequencer to a sound source.
[0002]
[Prior art]
Conventionally, a karaoke apparatus incorporating a sound source circuit is known. In this type of karaoke apparatus, karaoke performance data read from a storage medium such as a hard disk by a sequencer is sequentially supplied to a tone generator circuit, and karaoke performance is performed by tone synthesis.
[0003]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional karaoke apparatus, note-off (silence) information is generated when performance data configured in accordance with MIDI (Musical Instrument Digital Interface) or the like causes bit corruption during transmission or a sequencer malfunctions. In the case of missing, there is a problem in that the sound source circuit keeps sounding in a note-on (pronunciation) state, so that the user feels uncomfortable.
[0004]
The present invention has been made under such a background, and an object thereof is to provide a karaoke apparatus capable of avoiding a situation in which a sound source continues to sound for a long time due to lack of performance data or the like.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problem, the invention described in claim 1 is a sequencer that loads performance data composed of note information of a plurality of parts from a storage medium and sequentially outputs the performance data at a predetermined timing, and the sequencer In a karaoke device comprising a sound source that synthesizes karaoke music based on performance data sequentially supplied from
From the note information contained in the performance data loaded, a detecting means for detecting the maximum sounding time for each of the parts,
Clocking means for timing the time during which the sound source continues to sound for each part;
Comparing means for comparing, for each part, the maximum sounding time detected by the detecting means and the time value of the time measuring means to determine whether the time value exceeds the maximum sounding time;
Mute means for instructing the sound source to mute a sound that has been sounded exceeding the maximum sounding time when it is determined by the comparing means that the time value of the time counting means has exceeded the maximum sounding time. It is characterized by.
[0006]
The invention described in claim 2 is the karaoke apparatus according to claim 1, further comprising storage means for storing, for each part, the maximum pronunciation time detected by the detecting means, and the comparing means is provided for each part. to, the regimen during value by comparing the counting value of the maximum sounding time and said timing means being stored in said storage means is characterized that you determine whether exceeds said maximum sounding time.
[0007]
The invention of claim 3, wherein the error of the karaoke apparatus according to claim 1 Symbol placement, since the counting value of the counting means by the pre-Symbol comparison means identifies the note information judged to exceed the maximum sounding time Information is generated and the error information is stored as log data.
[0008]
According to a fourth aspect of the present invention, there is provided the karaoke apparatus according to the first aspect, wherein the sequencer determines whether the performance data loaded from the recording medium has an error in data or lack of data accompanying the loading. When it is judged and data error or data loss is found , the performance data is reloaded from the storage medium.
[0009]
According to a fifth aspect of the present invention, in the karaoke apparatus according to the first aspect, the performance data loaded from the recording medium by the sequencer is used to determine whether a data error or data loss associated with the loading has occurred. If it is determined that an error or missing data is found, it is further determined whether or not the performance data can be corrected. If it is determined that the performance data can be corrected, the performance data is corrected. On the other hand, when it is determined that the performance data cannot be corrected, the performance data is reloaded from the storage medium.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
A: Configuration of Embodiment FIG. 1 is a block diagram showing the configuration of a karaoke apparatus according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a hard disk device which stores karaoke performance data configured in accordance with MIDI and log data in which error information output from a tone generator circuit 2 (described later) is accumulated.
[0011]
Here, as shown in FIG. 2, the performance data is composed of tracks for each part, and each track has a note-on (sounding), a note-off (silence), a note number (sound name), and a velocity (sound strength). ), Etc., and a note information sequence consisting of duration data indicating the time interval between these events.
[0012]
Reference numeral 3 shown in FIG. 1 is a sequencer that controls the performance of karaoke. The sequencer 3 is composed of hardware such as a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Read / Write Memory), and the CPU executes the sequencer program stored in the ROM. Realize the function.
[0013]
That is, when the start of karaoke performance is instructed by an operation unit (not shown), the sequencer 3 loads performance data corresponding to the designated song from the hard disk device 1 to the RAM, and decodes the sequence data of each track in parallel. To do. Then, the duration is counted for each track, and the next event data is sent to the sound source circuit 2 at the timing when the counting is completed.
[0014]
When the performance data is loaded from the hard disk device 1, the sequencer 3 seeks the note-on event and the note-off event from the sequence data of each track, and the maximum duration from note-on to note-off for each part. (Hereinafter referred to as the maximum sounding time) is detected, and the maximum sounding time for each part is output to the sound source circuit 2.
[0015]
The tone generator circuit 2 synthesizes a karaoke tone signal based on control information such as note-on, note-off, note number, velocity, and tone color included in the performance data sequentially supplied from the sequencer 3. The generated musical sound signal is mixed with the voice signal of the singing sound input from the microphone, then sent to the sound system SS and emitted from the speaker SP.
[0016]
The tone generator circuit 2 includes storage means (register, RAM, etc.) for storing data in addition to the musical tone control information, and time measuring means for counting the reference clock. As a result, the tone generator circuit 2 stores the maximum sound generation time for each part supplied from the sequencer 3 in the form of a table shown in FIG. 3, for example, and during the performance, the sound generation time of each part (ie, the progress from the note-on event). Time) exceeds the maximum pronunciation time of each part. Error processing described later is performed according to the determination result.
[0017]
B: Operation of Embodiment Next, the operation of the embodiment will be described with reference to the flowchart shown in FIG. First, when a music number is input and a performance start is instructed through an input operation unit (not shown), the sequencer 3 loads performance data corresponding to the input music number from the hard disk device 1. Also, it seeks a no toe down event and note-off event from the sequence data of each track in parallel with the load, to detect the maximum sounding time of each part (step S1).
[0018]
Next, the sequencer 3 outputs information indicating the maximum sound generation time of each part to the tone generator circuit 2 as a MIDI message (for example, an exclusive message) (step S2). The sound source circuit 2 stores the received information indicating the maximum sound generation time of each part in the form of a table (see FIG. 3).
[0019]
Then, the sequencer 3 sequentially decodes the sequence data of each track from the top, and sends control information such as note-on and note-off included in the event data to the tone generator circuit 2 as the duration elapses. Thus, musical tone synthesis is performed in the tone generator circuit 2, and the performance of karaoke is started (step S3).
[0020]
The tone generator circuit 2 measures the elapsed time from the note-on event every time information for instructing the note-on is supplied (step S4), and compares this with the maximum sounding time of the part as needed (step S4). Step S5).
[0021]
Here, if there is no error in the data supplied from the sequencer 3, information for instructing note-off is supplied to the tone generator circuit 2 before the elapsed time from the note-on event exceeds the maximum sounding time of the part. As a result, the sound source circuit 2 clears the time measurement value and starts time measurement again at the next note-on event.
[0022]
On the other hand, if note-off information is missing due to bit corruption or the sequencer 3 malfunctioning during transmission of data to the tone generator circuit 2, the elapsed time from the note-on event exceeds the maximum sounding time of that part. End up. In this case, the following error processing is executed. That is, the sound source circuit 2, in order to avoid a situation in which sound continues longer O is stopped, forcing mute the sound in the sound, ie to mute (step S6). In addition, the tone generator circuit 2 generates information indicating which note of which part is in order to identify a location where an error such as data loss has occurred (for example, the performance data is a part number unique to each part). However, a unique address is assigned to each note-on event of each note, and an error occurrence location is specified by these addresses), and this is sent to the sequencer 3 as error information. The sequencer 3 accumulates the received error information as log data in the hard disk device 1 (step S7). Thereafter, if appropriate performance data is supplied, the musical tone is synthesized by the tone generator circuit 2 and the karaoke performance is continued.
[0023]
During the performance, the above-described operation is repeated for each part (steps S4 to S7). When the performance data reaches the end of data (step S8), the karaoke performance is terminated (step S9).
[0024]
As described above, according to the present embodiment, when the elapsed time from the note-on event timed in the tone generator circuit 2 exceeds the maximum sounding time of the part, the sounding is muted, so that the performance data is transmitted. It is possible to avoid a situation in which the tone generator circuit 2 keeps on sounding forever due to missing of note-off information due to bit corruption or malfunction of the sequencer 3. In addition, since error information for identifying the occurrence location such as missing is stored as log data, it is possible to easily know where the error has occurred.
[0025]
C: Modifications The present invention is not limited to the above-described embodiment, and various modifications such as the following are possible.
(1) When the sequencer 3 loads performance data from the hard disk device 1 and the event information of note-off is already missing, the maximum sounding time itself is not appropriate, so that a correct judgment cannot be made. Therefore, the suitability of the data may be checked when the performance data is loaded. If an error is found, the performance data may be reloaded. Further, a correctable error may be corrected in the sequencer 3 without being reloaded. This further improves the reliability of the performance data.
[0026]
(2) In the embodiment, the sound source circuit 2 determines an error. However, the present invention is not limited to this. For example, the sound source circuit 2 passes information indicating whether or not sound is being generated to the sequencer 3. The sequencer 3 may determine the sound generation time and instruct the sound source circuit 2 to mute.
[0027]
(3) Further, as in the embodiment, when an error occurs, not only the error sound is muted, but also, for example, the sequencer 3 is notified that the error has occurred, and the sequencer 3 fades out the performance of the entire song. It is also possible to control or provide a display unit such as a liquid crystal panel so that the user can display information such as what kind of error has occurred and how to deal with it.
[0028]
(4) In the embodiment, since the tone generator circuit 2 conforming to MIDI is taken as an example, the performance data is described as MIDI data. However, the present invention is not limited to this, and the tone generator circuit 2 is based on other standards. In such a case, the performance data may be configured according to a standard corresponding to the standard.
[0029]
(5) Further, the present invention is not only a so-called stand-alone karaoke apparatus, but also the hard disk device 1, the sequencer 3 or the sound source circuit 2 are arranged geographically separated from each other and connected via a communication line. The present invention can also be applied to a so-called network type karaoke apparatus. Further, in the case of such a network type karaoke apparatus, the effect of the present invention is extremely great because it is easily affected by noise during transmission.
[0030]
【The invention's effect】
As described above, according to the present invention, it is possible to avoid a situation in which the sound source continues to sound for a long time due to missing performance data or the like (claims 1 to 5).
[0031]
Further, according to the present invention, since error information for specifying the occurrence location of data loss or the like is accumulated as log data, it is possible to easily know where an error has occurred (claim 3).
[0032]
In addition, according to the present invention, it is possible to avoid errors such as data loss that occurs when performance data is loaded into the sequencer, so that the reliability of the performance data is improved ( claims 4 and 5).
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a karaoke apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing the contents of performance data in the same embodiment.
FIG. 3 is a view showing the contents of a table of maximum sound generation times stored in the sound source circuit in the same embodiment.
FIG. 4 is a flowchart for explaining the operation of the embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Hard disk apparatus, 2 ... Sound source circuit, 3 ... Sequencer, SS ... Sound system, SP ... Speaker.

Claims (5)

A sequencer that loads performance data composed of note information of a plurality of parts from a storage medium, sequentially outputs the performance data at a predetermined timing, and a sound source that synthesizes karaoke music based on performance data sequentially supplied from the sequencer In a karaoke apparatus comprising:
From the note information contained in the performance data loaded, a detecting means for detecting the maximum sounding time for each of the parts,
Clocking means for timing the time during which the sound source continues to sound for each part;
Comparing means for comparing, for each part, the maximum sounding time detected by the detecting means and the time value of the time measuring means to determine whether the time value exceeds the maximum sounding time;
Mute means for instructing the sound source to mute a sound that has been sounded exceeding the maximum sounding time when it is determined by the comparing means that the time value of the time counting means has exceeded the maximum sounding time. Karaoke device characterized by. The karaoke apparatus according to claim 1,
Comprising storage means for storing the maximum pronunciation time detected by the detection means for each part;
The comparing means compares, for each part, the maximum sounding time stored in the storage means and the time value of the time measuring means to determine whether or not the time value exceeds the maximum sounding time. A karaoke device that features it. The karaoke apparatus according to claim 1,
A karaoke apparatus characterized by generating error information for specifying note information for which the time value of the time measuring means is determined to have exceeded the maximum sounding time by the comparing means, and storing the error information as log data . The karaoke apparatus according to claim 1,
The sequencer determines whether the performance data loaded from the recording medium has a data error or data loss accompanying the loading, and if a data error or data loss is found, A karaoke apparatus which is reloaded from a storage medium. The karaoke apparatus according to claim 1,
When the sequencer determines whether or not there is an error in data or data loss accompanying the performance data loaded from the recording medium , and if an error in data or data loss is found, the performance data is further If it is determined that the performance data is correctable, the performance data is corrected. On the other hand, if it is determined that the performance data is not correctable, the performance data is stored in the memory. A karaoke apparatus which is reloaded from a medium.

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